Hi There. I have an old gelding so I have searched for the anti-aging supplements. The most intriguing I found was Recovery EQ. It seems to make good sense to me, as the ingredients used are also great for anti-aging in people. (I used to work for an anti-aging physician.) I read reviews and such, and am starting my big boy on it.
As far as joint supplements go, I've been giving my gelding those too for about 1.5 years now. We've had great success with Next Level joint supplement. I've found it cheaper on line - web sites like state line tack, and even amazon
. I even found Recovery EQ on amazon for 1/4 the price of other web sites.
Of course every horse is different, and the proof is in the pudding. Watch your horse to see how he/she responds. If you don't get good results, try a different one. Just keep trying until you find one that works for your budget and your horse.